Trident Water Meter

This is a disc water meter with split case and serial number 366,654 that fit a ⅝” pipe, and that was made by the Neptune Meter Company in Long Island City, New York, in the first decade of the twentieth century. The firm was founded in 1892. Its original product, the Trident water meter, was based on designs patented by John Thomson, a prolific inventor and member of the American Society of Civil Engineers. Neptune boasted in 1909 that “A record of over 600,000 Trident Meters made and sold give to us the pre-eminent position among water meter manufacturers.”
Ref: Neptune Meter Company, The Trident Water Meter (New York, 1895, 1901, 1903).
Currently not on view
date made
ca 1900-ca 1910
Neptune Meter Company
place made
United States: New York, Queens, Long Island City
Physical Description
brass (overall material)
overall: 7 3/4 in x 7 1/2 in; 19.685 cm x 19.05 cm
ID Number
accession number
catalog number
Credit Line
A.A. Hirsch
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Water Meters
Natural Resources
Data Source
National Museum of American History


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